demographics and birthrates could cause the u.s. to lose its place as a world leader sunday night at 9 eastern on "after words" on c-span2. and look for more online. like us on facebook. >> next on booktv, paul dickson presents a collection of words popularized by american presidents including warren g. harding's founding fathers invoked during his presidential campaign, theodore roosevelt's use of the word muckraker in a speech critical of specific journalists, and military industrial complex delivered by president eisenhower during his final presidential address to the american public in 1961. this is a little under an hour. [applause] >> thank you very much. i've been playing around with words for a long time, and i think when i was a kid, one of my -- i wasn't that athletic, and i wasn't that, you know, smart in various ways, but i could always go home and memorize a couple words, so i would learn words like apathetic and things like that. you know, for a third grader, it was a lot of fun. and as i got to be an older person, i got really fascinated by doing some tricks with words. one of m